Emissions - MIL ON/DTC's P0442/P0455/P0456

20 07 14

Nov. 26, 2007

2016757





Vehicle Information

Condition

MIL ON, DTCs P0442, P0455 or P0456 Stored in ECM Fault Memory





MIL ON with one or more of the following DTCs are stored in the ECM fault memory:

Note:
Vehicle may come from two different manufacturing facilities (designated by "E" or "P" in the VIN). The range varies from each factory.

Technical Background

The Evaporative Emission system (EVAP) system may suffer leak(s) because of fuel cap seal integrity.

Production Solution

A redesigned fuel cap has been installed in production that improves seal robustness and friction coefficient of the seal as of:

3C_6E236771 (sedan)

3C_7E008950 (wagon)

3C_7P008830 (sedan)

Service

If any of the DTCs listed above are stored in the ECM fault memory:

^ Follow Guided Fault Finding to determine root cause of DTC(s).

^ Perform all related technical bulletins that apply.





^ Remove and Inspect fuel cap for "G" index, see "figure 1".

If vehicle IS NOT equipped with "G" index fuel cap:

^ Install redesigned fuel cap, Part No. 3C0 201 550 G

^ Clear codes and reset readiness.

If vehicle IS equipped with ��G�� index fuel cap:

^ Reinstall fuel cap and tighten properly.

^ Perform emission system leak test as described in the Repair Manual Group 20, Fuel Supply, Evaporative Emission (EVAP) system, checking for leaks in ElsaWeb.








Warranty





Required Parts and Tools

Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal. Always check with your Parts Dept. and Repair Manuals for the latest information.